Ford Focus Mk3 1.6 TDCi 115bhp — Suspension Coil Spring Snapping
A very common MOT failure in the UK. Suspension coil springs corrode and snap, usually near the bottom pigtail.
Severity
SevereDIY Difficulty
Hard
Est. Cost
£150–£300
OBD Codes
None
Suspension
Typical layout and location for the Suspension assembly.
Symptoms
- Loud 'twang' or bang when turning the steering wheel at low speeds
- Car sits noticeably lower on one side
- Grating noise over bumps
Root Cause
The protective coating on the steel spring chips from stone impacts. Salt water corrodes the exposed steel, weakening the spring until it fractures under load.
How To Fix
- Visually inspect all four springs for fractures at the very bottom coil.
- Always replace coil springs in pairs across an axle to maintain handling balance.
- Cost: £150-300 per pair at an independent garage.
Estimated Repair Costs
| Repair Option | Est. Cost (GBP) |
|---|---|
| DIY (parts only) | £60–£120 |
| Independent Garage | £150–£300 |
| Main Dealership | £240–£480 |
Other Faults on This Variant
DPF Blockage and Forced Regeneration Failure
ModerateDPF blockage is the most reported issue on the Focus Mk3 1.6 TDCi. City driving prevents regeneration, and the DPF warning light becomes a familiar sight for urban Focus diesel owners.
EGR Valve and Cooler Failure
SevereThe EGR valve and cooler on the Mk3 Focus 1.6 TDCi are known to fail together. EGR cooler failure can cause coolant to enter the intake — a more serious failure than a simple blocked valve.
Turbocharger Failure
SevereThe turbocharger on the Focus Mk3 1.6 TDCi is vulnerable to bearing wear from oil sludge and extended service intervals. Failure typically presents as a sudden loss of power with a loud noise.
Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.